diff --git a/es-core/src/utils/TimeUtil.h b/es-core/src/utils/TimeUtil.h
index 9b44207..db69ad3 100644
--- a/es-core/src/utils/TimeUtil.h
+++ b/es-core/src/utils/TimeUtil.h
@@ -2,6 +2,7 @@
 #ifndef ES_CORE_UTILS_TIME_UTIL_H
 #define ES_CORE_UTILS_TIME_UTIL_H
 
+#include <ctime>
 #include <string>
 
 namespace Utils